Secondary-side coil assembly for inductive energy transfer using quadrupoles

Abstract

The invention relates to a secondary-side coil arrangement for an inductive energy transmission system for transmitting energy between a primary-side and a secondary-side coil arrangement (A 1 , A 2 ), characterised in that the secondary-side coil arrangement (A 1 ) has coils (SS 1 , SS 2 , SS 3 , SS 4 ) which form four coil regions (BE S1 , BE S2 , BE S3 , BE S4 ) of the coil arrangement (A 1 ) which are arranged beside each other in a plane, wherein each coil (SS 1 , SS 2 , SS 3 , SS 4 ) forms an oscillating circuit (RES S ) together with at least one capacitor (C S1-4 ).

1 . A secondary-side coil arrangement for an inductive energy transmission system for transmitting energy between primary-side and a secondary-side coil arrangements the secondary-side coil arrangement comprising:
 coils that form four coil regions of the coil arrangement, which are arranged beside each other in a plane, wherein each coil forms an oscillating circuit together with at least one capacitor.   
     
     
         2 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein a respective one of the coils partially overlaps with at least two other coils and forms therewith two coil regions arranged spatially beside each other. 
     
     
         3 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein each of the four coil regions is arranged in a quadrant. 
     
     
         4 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein each coil covers only one or two coil regions. 
     
     
         5 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein each coil covers two adjacent coil regions or two coil regions that are arranged diagonally with respect to each other. 
     
     
         6 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , further comprising at least one rectifier configured to rectify currents that are adjusted in the coils, wherein. 
     
     
         7 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein the coils comprise four coils, and wherein the four coils are constructed in a rectangular manner, wherein at least two sets of two of the four coils form respective coil pairs, wherein the coil pairs are rotated through 90° with respect to each other and are arranged one above the other. 
     
     
         8 . The secondary-side coil arrangement for an inductive energy transmission system according to any one of the preceding claims, characterised in that the respective primary- and secondary-side coil arrangements have a rectangular, round, or elliptical outer contour. 
     
     
         9 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein the coils comprise four coils, and wherein the secondary-side coil arrangement, in addition to the four coils, further comprises at least one additional coil arranged so as to overlap with at least one of the four coil regions. 
     
     
         10 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein respective pairs of the coils form coil pairs, and wherein the coils of a respective coil pair are connected in series, wherein a centre tap impedance is electrically connected with a first pole thereof to a connection location of a coil pair and with another pole thereof electrically connected to a centre location/centre tap of a voltage divider. 
     
     
         11 . The secondary-side coil arrangement according to  claim 1 , wherein the coils are formed by planar windings. 
     
     
         12 . The secondary-side coil arrangement according to  claim 1 , wherein respective pairs of the coils form coil pairs, and wherein the coils that form a respective coil pair are formed by a single winding with a centre tap. 
     
     
         13 . The secondary-side coil arrangement for an inductive energy transmission system according to  claim 1 , wherein the coils are wound around a ferrite plate, wherein the coils are arranged at least on a flat side of the ferrite plate orthogonally with respect to each other or intersect at least in a center of the flat side of the ferrite plate, or both are arranged orthogonally with respect to each other on the flat side of the ferrite plate and intersect in the center of the flat side of the ferrite plate. 
     
     
         14 . The secondary-side coil arrangement according to  claim 13 , wherein the secondary-side coil arrangement is a solenoid arrangement, wherein the coils are formed by windings, which are in abutment with flat sides and narrow end sides of the ferrite plate. 
     
     
         15 . The secondary-side coil arrangement according to  claim 13 , wherein the windings are connected to two rectifiers. 
     
     
         16 . The secondary-side coil arrangement according to  claim 13 , wherein winding arms of the windings together form an intersection location that divides the ferrite plate into regions that form the coil regions.